import java.util.Scanner;

public class Work04 {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        String[] arr = {"中之墙","张三","张力"};
        int count =0;
        for (int i = 0;i<arr.length;i++){
            if (arr[i].indexOf("张")==0){
                count++;
            }
        }
        System.out.println("人数"+count);


    }
}
